The StdIn, StdOut, and StdErr properties and methods work when running the script with the CScript.exe host executable file only. An "Invalid Handle" error is returned when run with WScript.exe. The position pointer moves forward by the number of characters (bytes) specified in the argument characters. You cannot use the Skip method to skip backwards through a file (negative character values are not supported). The Skip method is limited to the open for reading mode only (you cannot skip a specified number of characters when writing to an output stream).